if showWithAncestorsAndDescendants show child records(if any) - even if child records don't match filtering conditions. If showWithAncestors show only those records that match filtering conditions(and their parent records) and do not show child records(if any) that don't match filtering conditions

public TreeGridFilteringWrapper DisplayMode( 
   TreeGridFilteringDisplayMode displayMode
)

'Declaration
 
Public Function DisplayMode( _
   ByVal displayMode As TreeGridFilteringDisplayMode _
) As TreeGridFilteringWrapper